Create a new mapping with one source. Define the expression for the fields. Save the configuration. You will see that in the mapping.xml, the source section in the new mapping will have some <write-expression> tags. See the following example:

    <source name="l">
      <field name="uid">
        <write-expression>uid</write-expression>
        <expression>uid</expression>
      </field>
      <field name="sn">
        <write-expression>sn</write-expression>
        <expression>sn</expression>
      </field>
      <field name="cn">
        <write-expression>cn</write-expression>
        <expression>cn</expression>
      </field>
    </source>

The <write-expression> is no longer needed, it has been replaced by the <expression> tag, which is already there. The old tag doesn't cause a problem on the server, but it shouldn't be there.


=========================================================
Issue dump from jira
$VAR1 = {
          'priority' => '4',
          'customFieldValues' => [],
          'project' => 'PENROSE',
          'status' => '6',
          'components' => [
                            {
                              'name' => 'Studio',
                              'id' => '10010'
                            }
                          ],
          'reporter' => 'endisd',
          'key' => 'PENROSE-16',
          'assignee' => 'endisd',
          'summary' => 'Mapping Tool should not generate <write-expression> tag',
          'id' => '10081',
          'updated' => '2005-07-07 17:56:35.0',
          'votes' => '0',
          'fixVersions' => [
                           {
                             'releaseDate' => '2005-06-03 00:00:00.0',
                             'sequence' => '1',
                             'name' => 'Penrose-0.9.1',
                             'released' => 'true',
                             'id' => '10004',
                             'archived' => 'false'
                           }
                         ],
          'affectsVersions' => [],
          'description' => 'Create a new mapping with one source. Define the expression for the fields. Save the configuration. You will see that in the mapping.xml, the source section in the new mapping will have some <write-expression> tags. See the following example:

    <source name="l">
      <field name="uid">
        <write-expression>uid</write-expression>
        <expression>uid</expression>
      </field>
      <field name="sn">
        <write-expression>sn</write-expression>
        <expression>sn</expression>
      </field>
      <field name="cn">
        <write-expression>cn</write-expression>
        <expression>cn</expression>
      </field>
    </source>

The <write-expression> is no longer needed, it has been replaced by the <expression> tag, which is already there. The old tag doesn't cause a problem on the server, but it shouldn't be there.
',
          'created' => '2005-05-13 12:48:26.0',
          'resolution' => '1',
          'type' => '1'
        };


=========================================================